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CN108699209A - The method for being used to prepare polyurethane foam - Google Patents

The method for being used to prepare polyurethane foam Download PDF

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Publication number
CN108699209A
CN108699209A CN201780014974.7A CN201780014974A CN108699209A CN 108699209 A CN108699209 A CN 108699209A CN 201780014974 A CN201780014974 A CN 201780014974A CN 108699209 A CN108699209 A CN 108699209A
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CN
China
Prior art keywords
compound
size distribution
foam
suspension
polyurethane foam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201780014974.7A
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Chinese (zh)
Inventor
J-H.康
F.哈丁格豪斯
K.伯尔纳
J.法布尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay SA
Original Assignee
Solvay SA
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Filing date
Publication date
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Publication of CN108699209A publication Critical patent/CN108699209A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/50Polyethers having heteroatoms other than oxygen
    • C08G18/5003Polyethers having heteroatoms other than oxygen having halogens
    • C08G18/5006Polyethers having heteroatoms other than oxygen having halogens having chlorine and/or bromine atoms
    • C08G18/5012Polyethers having heteroatoms other than oxygen having halogens having chlorine and/or bromine atoms having bromine atoms
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08Processes
    • C08G18/16Catalysts
    • C08G18/18Catalysts containing secondary or tertiary amines or salts thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4829Polyethers containing at least three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/12Powdering or granulating
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014Use of organic additives
    • C08J9/0019Use of organic additives halogenated
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014Use of organic additives
    • C08J9/0023Use of organic additives containing oxygen
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014Use of organic additives
    • C08J9/0038Use of organic additives containing phosphorus
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/08Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0025Foam properties rigid
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00Foams characterised by the foaming process
    • C08J2201/02Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/022Foams characterised by the foaming process characterised by mechanical pre- or post-treatments premixing or pre-blending a part of the components of a foamable composition, e.g. premixing the polyol with the blowing agent, surfactant and catalyst and only adding the isocyanate at the time of foaming
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00Foams characterized by the expanding agent
    • C08J2203/02CO2-releasing, e.g. NaHCO3 and citric acid
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2205/00Foams characterised by their properties
    • C08J2205/04Foams characterised by their properties characterised by the foam pores
    • C08J2205/052Closed cells, i.e. more than 50% of the pores are closed
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2205/00Foams characterised by their properties
    • C08J2205/10Rigid foams
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2207/00Foams characterised by their intended use
    • C08J2207/04Aerosol, e.g. polyurethane foam spray
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/10Block- or graft-copolymers containing polysiloxane sequences
    • C08J2483/12Block- or graft-copolymers containing polysiloxane sequences containing polyether sequences

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Emergency Medicine (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

The present invention relates to:The method for being used to prepare polyurethane foam, these methods include the steps that the compound wherein with low granularity discharges chemistry and/or physical blowing agent by decomposing;The polyurethane foam that is prepared by such method and comprising at least one polyalcohol and with low granularity, the composition of the compound of chemistry and/or physical blowing agent and the purposes of such composition can be discharged by the degradation of thermal induction and/or chemical induction.

Description

The method for being used to prepare polyurethane foam
The present invention relates to:The method for being used to prepare polyurethane foam, these methods include the chemical combination for wherein having low granularity The step of object is by decomposing to discharge chemistry and/or physical blowing agent;The polyurethane foam and packet prepared by such method Containing at least one polyalcohol and with low granularity, can by the degradation of thermal induction and/or chemical induction come discharge chemistry and/or The composition of the compound of physical blowing agent and the purposes of such composition.
Polyurethane foam can be by keeping suitable polyisocyanate (usually more with isocyanates-reactive compounds First alcohol) mixture reacted in the presence of a blowing agent to prepare.This class A foam A is typically used as insulation medium.These insulative properties Depending on many factors, including abscess-size.The heat barrier foam for the abscess-size for having small has been proposed in the prior art. Theoretically, the small abscess-size in nanometer range should generate excellent insulative properties, because gas can to the contribution of thermal conductivity It can be lowered (' Knudsen effect ').For this purpose, 9139683 B2 of US suggest using overcritical or near-critical CO2As foaming Agent.However, overcritical or near-critical processing is not direct and may constitute risk to employment security.
Therefore now, the invention enables the polyurethane foam of improved polyurethane or modification and it is used to prepare (modified) The improved method of polyurethane foam is available.The object of the present invention is to provide a kind of safer, more economical and/or more ecological Method.Moreover, it is an object that a kind of method, this method is generated with improved stability, combustibility, heat-insulated The polyurethane foam of characteristic, machinability, and/or abscess-size.
This purpose and other purposes are being realized through the invention as summarized in patent claims.
Therefore, one aspect of the present invention is related to a kind of side for the polyurethane foam being used to prepare polyurethane foam or modification Method, this method include that wherein compound discharges chemistry and/or physical blowing agent by the decomposition of thermal induction and/or chemical induction The step of, wherein the compound, which has, is equal to or less than 1 μm, is preferably equal to or lower than 500nm, is more preferably equal to or less than The size distribution for being expressed as D50 of 250nm.
Polyurethane foam is typically to be prepared by making two kinds of individual composition contacts.On the one hand, the so-called sides B- (B-side), it is usually made of the mixture of isocyanates or isocyanates.On the other hand, the so-called sides A- (A-side) packet It is contained in the every other component used in the production of foam, especially polyalcohol or polyol blends.The sides A- and the sides B- This Europe that is defined on be widely used and also use herein.The sides A- generally further include foaming agent, fire retardant, catalyst, Surfactant and other auxiliary agents.In a preferred embodiment, which is prepared by spraying foaming.Injection It foams and means that the sides A- and the sides B- is made to combine in nozzle under stress and be then applied directly to need heat-insulated space, such as Wall, roof or construction set.
Foaming agent is the compound that foam structure or matrix can be produced during polyurethane foam is formed.
Chemical foaming agent is known in the art.Term " chemical foaming agent " is intended to indicate that and in frostproof froth n process The foaming agent that at least one component of the middle composition used is chemically reacted.More specifically, due to water with isocyanates Reaction in form CO2, may be used as chemical foaming agent.The CO being consequently formed2It is used to generate foam structure in the foam. To avoid doubt, term " chemical foaming agent " as used herein from being intended to the chemistry for meaning to be formed in the decomposition reaction of compound Foaming agent.
Physical blowing agent is also known in the art.Term " physical blowing agent " be intended to indicate that usually not in foam The foaming agent that one of component of composition used in foaming process is chemically reacted.Suitable physical blowing agent includes dioxy Change carbon, carbon monoxide, nitrogen and hydrogen.Specifically, carbon dioxide is used as physical blowing agent.To avoid doubt, such as herein The term " physical blowing agent " used is intended to the physical blowing agent for meaning to be formed in the decomposition reaction of compound.
Term " polyurethane foam " is intended to indicate that the polymer for reacting generation substantially by polyalcohol and isocyanates.This A little polymer are typically by showing that the preparation from 100 to 180 isocyanate index obtains.Term " modified poly- ammonia Ester foam " is intended to indicate that, by the polymer generated that reacts of polyalcohol and isocyanates, these isocyanates include in addition to amino Other kinds of functional group except formic acid esters functional group, the three isocyanide urea rings formed especially by the trimerization of isocyanates (triisocyanuric ring).These polyurethane being modified are commonly known as poly-isocyanurate (PIR).These polymer Typically by showing that the preparation from 180 to 550 isocyanate index obtains.
Preferably, polyurethane foam and modified polyurethane foam be rigid, closed-cell foam.
Any isocyanates for being routinely used for manufacturing this class A foam A can be used in the method according to the invention.Example Such as, it can be mentioned that aliphatic isocyanates (such as hexamethylene diisocyanate) and aromatic isocyanate (such as toluene two is different Cyanate or methyl diphenylene diisocyanate).
Any polyalcohol for being routinely used for manufacturing this class A foam A can be used in the method according to the invention.Term " polyalcohol " is intended to indicate that the compound for including more than one hydroxyl in the structure, such as the compound may include 2,3 or 4 Hydroxyl, further preferably 5 or 6 hydroxyls;And it is intended to the polyalcohol comprising the chemical constitution with single restriction and with difference The mixture of the polyalcohol of chemical constitution.The polyalcohol preferably synthesized.Further preferably polymerized polyalcohol, more preferable polyester Polyalcohol or polyether polyol.The suitable example of polyester polyol includes polycaprolactone glycol and diethylene glycol terephthalic acid (TPA) Ester.The suitable example of polyether polyol includes polyethylene glycol (such as PEG 400), polypropylene glycol and poly- (tetramethylene ether) two Alcohol.Polyether polyol further preferably based on carbohydrate, glycerine or amine.The example packet on suitable carbohydrate basis Include sucrose and D-sorbite.Most preferably brominated polyetherdiol, such as polyether polyol B350 (No. CAS:68441-62- 3).Especially suitable for the mixture of polyether polyol B 350 and triethyl phosphate, can exist from Su Wei groups (Solvay) Brand name251 times acquisitions of B.
It is optionally possible to by selected from fire retardant, foam stabiliser, catalyst, surfactant and co-foaming agent at least A kind of other component is added to the sides B- or is preferably added to the sides A-.
The co-foaming agent can be selected from chemistry and/or physical blowing agent as described above.
" the chemical co-foaming agent " being such as used in the present invention is intended to indicate that included in the sides A- can be with the isocyanide of the sides B- The component of acid esters reaction.It is believed that the energy discharged in the form of heat from this reaction promotes further foam manufacture process. Preferred chemistry co-foaming agent includes water, NH3, primary amine, secondary amine, alcohol (preferably difunctional alcohol or trifunctional alcohol), azanol and ammonia Base alcohol.Especially preferably bifunctional amine or polyfunctional amine, glycol or glycerine.Suitable example includes diaminoethanes, 1, 3- diaminopropanes and triethanolamine.
Preferred physics co-foaming agent includes alkane, such as propane or cyclopropane, alkyl fluoride (HFC) and fluorinated olefins (HFO).About HFC and HFO, for example, it can be mentioned that 1,1,1,3,3- 3-pentafluorobutane (HFC 365mfc), 1,1,1,2- tetrafluoro second Alkane (HFC-134a), 1,1,1,2,3,3,3- heptafluoro-propanes (HFC 227ea), 1,1,1,3,3- pentafluoropropanes (HFC 245fa), The mixture of alkenyl halide (as HFO-1234yf, HFO-1234zr and HFO-1233zd) or the alkane and alkene.
If using co-foaming agent, preferably extremely with total weight 1wt% to 20wt%, more preferable 2wt% based on the sides A- The range of 10wt%, most preferably 3wt% to 7wt% use.
Conventional use of any fire retardant in the manufacture of this class A foam A can be used.For example, it can be mentioned that being based on phosphorous The fire retardant of acid esters.Suitable example includes triethyl phosphate (TEP), three (2- chloro isopropyls) phosphates (TCPP), dimethyl Propane phosphonic acid ester (DMPP), diethyl ethane phosphonate ester (DEEP), triethyl phosphate, phosphoric acid trichlorine isopropyl ester.In fact, being made The amount of fire retardant be generally every 100 weight polyol from about 0.05 to 50 parts by weight, preferably 1 to 25 parts by weight, More preferable 10 to 20 parts by weight variation.
Suitable catalyst includes catalysis by reacting formation-NH-CO-O- amino first between polyalcohol and isocyanates The compound reacted between acid esters key or activation isocyanates and water, such as tertiary amine and organotin, iron, mercury or lead compound. It particularly can be mentioned that triethylamine, N, N- dimethyl cyclohexyl amines, N-methylmorpholine, N-ethylmorpholine, dimethyl second as tertiary amine Hydramine, Er Danza [2.2.2]Double-octane (triethylenediamine) and the benzylamine of substitution, such as N, N- dimethyl benzylamines and N, N, N ', N ", N "-five methyl diethylentriamine (PMDTA).As organotin or lead compound, particularly it can be mentioned that February Dilaurylate, stannous octoate and lead octoate.It is intended for modified polyurethane (poly-isocyanurate) foam of manufacture Other suitable catalyst include the compound for being catalyzed isocyanates to the trimerization of three isocyanuric acid esters.
In fact, the amount of used catalyst is generally every 100 weight polyol from about 0.05 to 10 weight Part variation.Generally, the amount of composition according to the present invention is every 100 weight polyol from 1 to 80 parts by weight.It is preferably It is every 100 weight polyol from 10 to 60 parts by weight.
Conventional use of any foam stabiliser in the manufacture of this class A foam A can be used.For example, it can be mentioned that silica Alkane copolyether.In fact, the amount of used foam stabiliser is generally the polyalcohol of every 100 parts by weight from about 0.05 to 10 parts by weight, preferably 0.5 to 3.0 parts by weight, the variation of more preferable 1 to 2 parts by weight.
Term " decomposition of thermal induction " is intended to indicate that the decomposition of compound, is mainly exposed to raised temperature by by compound The influence of degree.Preferably, which is involved heat-producing chemical reaction in the formation of foam as a result, for example different The result of cyanate and polyol reaction.It is further preferred that the raised temperature is supplied by extra power, more preferably by by A- Side or the sides B- component or any or all of the device used in foaming process preheat to supply." raised temperature " It is intended to indicate that the temperature higher than environment temperature.Suitable temperature is from 30 DEG C to 100 DEG C, preferably from 40 DEG C to 90 DEG C, more preferably From 50 DEG C to 80 DEG C.The specific example of the decomposition of thermal induction is sodium bicarbonate (NaHCO3) decomposition.In this case, the liter High temperature is above the decomposition temperature (50 DEG C) of sodium bicarbonate.
Preferably, compound discharges chemistry and/or physical blowing agent by the decomposition of thermal induction.It is highly preferred that the change Close object there is no under acidic activator by the decomposition of thermal induction come discharge chemistry and/or physical blowing agent.Preferred real It applies in example, the sides A- or the sides B- or both the sides A- and the sides B- can be preheated before producing foam.They can be preheated to Temperature from 25 DEG C to about 80 DEG C, preferably from 30 DEG C to 60 DEG C, more preferably from 40 DEG C to 50 DEG C.The preheating step can be Including being carried out in the storage tank of the sides A- and/or the sides B-.It can also in the pipeline from storage tank to the mixing point of the sides A- and the sides B- into Row.The mixing head that is used in mixed way routinely carries out.Alternatively, can heat the mixing head itself with just mixing step it The preceding sides preheating A- and/or the sides B-.If carrying out foam production by spraying foam process, the nozzle itself can be heated.
Term " decomposition of chemical induction " is intended to indicate that the decomposition of compound, mainly by the compound and activator, excellent Choosing and alkalinity or the influence of acidic activator chemical reaction.Suitable acidic activator includes bronsted acid, such as carboxylic acid, spy It is not citric acid, acidic acid and formic acid.It is further preferred that the acidic activator can be formed in situ during foaming process.It is suitble to Example be can be by reacting the acetic acid being formed in situ from acid anhydrides with water.In a more preferred embodiment, NaHCO3With acid anhydrides It is applied in combination.
Preferably, more preferably in the presence of acidic activator, most preferably in citric acid, acetic acid, polyphosphoric acid and/or formic acid In the presence of, which discharges chemistry and/or physical blowing agent by the decomposition of chemical induction.It is further preferred that the acid is living Agent is dicarboxylic acids, such as oxalic acid, malonic acid, succinic acid, glutaric acid or adipic acid.The acid activators are preferably included in the sides A- In.In another preferred embodiment of injection foaming, by the acid activators via third pipe during spraying foaming process Line is added to nozzle simultaneously.
It is further preferred that the compound discharges chemically and physically both foaming agents.It is highly preferred that the compound passes through thermal induction Decomposition discharge chemically and physically both foaming agents.
Preferably, which is inorganic carbonate.Suitable inorganic carbonate includes NaHCO3,Na2CO3,CaCO3, (NH4)2CO3,NH4HCO3,MgCO3And trona.In the specific embodiment of the present invention, which is NaHCO3
It is further preferred that the compound is the hydrate of the hydrate of inorganic salts, more preferable alkali metal salt or alkali salt, Most preferably the compound is the hydrate of sodium sulphate, especially Na2SO4·10H2O。
Preferably, which has equal to or more than 10nm, preferably equal to or greater than 50nm, more preferably equal to or greater than The size distribution for being expressed as D50 of 100nm.It is further preferred that the size distribution for being expressed as D50 be equal to or higher than 1nm, preferably etc. In or higher than 10nm.More preferably from 25nm to 250nm, most preferably between 50nm and 150nm.Specifically, from 60nm to 100nm。
Size distribution according to the present invention is provided with D50 values, it means that the 50% of sample quality is by less than given value Particle is constituted.The size distribution can use laser diffraction particle size analyzer (BeckmannLS 230) it measures. Sample is added in the instrument, is in the instrument added to the sample in isopropanol medium at room temperature.
Compound with the size distribution in the scope of the invention is commercially available.Alternatively, for example, they can lead to The controlled precipitation from suitable starting material is crossed to prepare.For example, the NaHCO with suitable size distribution3It can be by adding Add ammonium hydrogen carbonate to precipitate, filter from the saturated solution of sodium chloride and collects.
Compound with the size distribution in the scope of the invention can also be prepared by reducing the granularity of compound.It is excellent The reduction of selection of land, this granularity carries out in grinder.Particularly suitable grinder is ball mill, also referred to as planetary grinding Machine, ball mill or pearl grinding machine.Therefore, by loose solid mill medium stirred together with the compound with realize grinding and/ Or milling efficiency.Compatibly, which mills medium including being for example made of flint, steel, glass or ceramics (such as zirconium oxide) Hard object.The shape of the medium of milling can change and can be for example selected from sphere, ovoid, polyhedron or torus. What sphere was especially suitable for.In the case of sphere, the size for medium of milling is from 0.01mm to 1.00mm, preferably in 0.03mm To between 0.10mm, more preferably from about 0.05mm.
The granularity of the compound can also be reduced by being co-mulled and made into.Therefore, the compound is made (preferably to have in agent of milling altogether Have the agent of milling altogether than the compound bigger hardness) in the presence of be subjected to grinding steps.Term " hardness " is referred to according to Mohs The hardness of scale (Mohs scale).The suitable example of agent of milling altogether includes silica, sand, zeolite and metal (preferably alkali Metal or alkaline-earth metal) oxide, such as CeO2,ZrO2, MgO or ZnO.Being co-mulled and made into can drape over one's shoulders according in such as US 5466470 The program of dew carries out.This is co-mulled and made into agent and preferably can also be the compound that can discharge chemistry and/or physical blowing agent. In suitable example, NaHCO can be co-mulled and made into3And NaSO4·10H2The mixture of O.This is co-mulled and made into step most preferably in ball milling It is carried out in machine.
It is further preferred that after at least one component that compound is suspended in the sides the B- sides Zhong HuoB-, such as be suspended in After in the mixture of the isocyanates or isocyanates that are used during frostproof froth n, the granularity of the compound can be reduced. It is highly preferred that after at least one component that compound is suspended in the sides the A- sides Zhong HuoA-, such as it is suspended in frostproof froth n After in at least one polyalcohol used in the process, the granularity of the compound can be reduced.It is further preferred that being hanged by compound After floating at least one fire retardant, such as after being suspended in triethyl phosphate and/or phosphoric acid trichlorine isopropyl ester, it can subtract The granularity of the small compound.Therefore, which is a kind of method, and this approach includes the following steps:
A1) preparation includes the suspension of or mixtures thereof the compound and at least one polyalcohol or at least one fire retardant Liquid,
A2) make in step a1) in formed the suspension reduce the size distribution of the compound through being subject to processing, and
B) make in step a2) in formed the suspension contacted with the composition comprising at least one isocyanates to prepare Polyurethane foam, wherein compound discharge chemistry and/or physical blowing agent and the wherein chemical combination under heat and/or chemical activation Object has the size distribution for being expressed as D50 equal to or less than 1 μm.
Preferably, the processing of the reduction size distribution includes grinding steps, more preferably uses the grinding steps of ball mill.
It is further preferred that the processing of the reduction size distribution includes sonication step.
It is further preferred that the processing of the reduction size distribution includes grinding simultaneously and sonication step.
In another preferred embodiment according to the method for the present invention, the compound (especially NaHCO3) granularity Reduced by being ground in abrasive solvents.Term " abrasive solvents " is intended to indicate that solvent, and compound is subjected to grinding in the solvent Step is ground, and the abrasive solvents are removed before the compound is used for foam production.The boiling point of the abrasive solvents is excellent Selection of land is between 50 DEG C and 150 DEG C, more preferably between 60 DEG C and 120 DEG C.The example of suitable abrasive solvents include alcohol, Water, hydrocarbon, hydrofluorocarbons and chlorinated hydrocabon.Preferably, which is ethyl alcohol, propyl alcohol, isopropanol, isobutanol.Grinding further preferably Solvent is perfluoropolyether, especially from Solvay Fluor & Derivate (Solvay Fluor GmbH)Product system Row, especiallyHT55。
The compound (especially NaHCO3) concentration in the abrasive solvents is between 10wt% and 70wt%, preferably Ground 20wt% to 50wt% and more preferably between 30wt% and 40wt%.
In a preferred embodiment, which carries out in the presence of surfactant.It is without being bound by theory, it is believed that The surfactant avoids the reunion and/or aggregation of the compound.
" surfactant " should indicate amphiphilic organic cpd, it is intended that these organic compounds simultaneously comprising hydrophobic group and Hydrophilic group.
The example of suitable nonionic surfactant includes but not limited to the alcohol ethoxylate of straight chain, polyoxyethylene alkane Base phenol ethoxylate, polyoxyethylene alcohol ethoxylate, polyoxyethylene carboxylate, polyoxyethylene alkyl amine, the more Portugals of alkyl Glucosides, ethylene oxide-propylene oxide copolymer or combinations thereof.
The example of suitable cationic surfactant include but not limited to quaternary ammonium salt, ethoxylation quaternary ammonium salt or its Combination.Preferred cationic surfactant can be with the carbon chain lengths of 8-20 carbon atom.
It is preferred that having the surfactant of phosphate, carboxylate, sulfonate or sulfate group as hydrophilic group.Further preferably Be the surfactant that there is polyethers or polyester base side chain as hydrophobic group.Preferred polyethers base side chain have 3 to 50, it is excellent Select 3 to 40, particularly 3 to 30 alkylene oxide groups.The alkylene oxide group be preferably chosen from by methylene oxygroup, ethyleneoxy group, The group of propylidene oxygroup and butylidene oxygroup composition.The length of the polyethers base side chain generally from 3nm to 100nm, preferably from 10nm to 80nm.
The suitable example of such surfactant indicates by phosphoric acid derivatives, an oxygen atom of wherein P (O) group Replaced by C3-C10 alkyl groups or alkenyl group.
The surfactant can be such as di-phosphate ester with polyethers or polyester base side chain and alkenyl part.With 4 Alkenyl to 12, particularly 4 to 6 carbon atoms is that height is suitble to.The particularly preferably phosphorus with polyether/polyester side chain Acid esters, the phosphate ester salt with polyethers/alkyl side chain and the surfactant with deflocculated effect are (based on for example with adding The high molecular weight copolymer of the group of work pigment compatibility).
The abrasive solvents are removed after the grinding steps and prepare at least one of the compound in the sides A- or in the sides A- Suspension in component carries out suspension media exchange.This exchange can be carried out by conventional means, such as be steamed using rotation Send out device.
According to this preferred embodiment, the processing for reducing size distribution includes the following steps:
M1 the compound (especially NaHCO) is prepared3) suspension in abrasive solvents,
M2) make in step m1) in formed the suspension reduce the size distribution of the compound through being subject to processing, especially Grinding steps,
M3 the abrasive solvents) are removed by evaporating and/or filtering,
M4) prepare in step m3) in formed the compound, particularly NaHCO3If the sides A- or the sides A- one kind or Suspension in dry kind of component, and
M5) make in step m4) in formed the suspension contacted with the composition comprising at least one isocyanates to make Standby polyurethane foam, wherein compound discharge chemistry and/or physical blowing agent and the wherein change under heat and/or chemical activation Closing object has the size distribution for being expressed as D50 for being equal to or less than 1 μm.
Another aspect of the present invention relates to a kind of as obtained by the method for the present invention as outlined above (modified) Polyurethane foam.Preferably, the foam includes abscess, these abscesses have the slave 10nm to 1 measured according to ASTM D 3576 μm, the average cell size preferably from 50nm to 500nm, more preferably from 100nm to 250nm.Polyurethane foam according to the present invention Foam or the polyurethane foam of modification are preferably rigid closed-cell foam.The polyurethane foam or the polyurethane foam of modification can be with Selected from the flexible or semiflexible foam or skinned foam for example for producing sole or for filling seat cushion.
Preferably, the polyurethane foam or the polyurethane foam of modification are produced by spraying foaming.It is further preferred that this hair Bright method is used for producing discontinuous or continuous plate, the pipe for pipe insulation, sandwich plate, laminate and blocky bubble Foam.It is further preferred that the foam of the present invention is eliminated for noise.The further aspect of the present invention is related to a kind of composition, the combination Object is comprising at least one polyalcohol and can be sent out by the degradation of thermal induction and/or chemical induction to discharge chemistry and/or physics The compound of infusion, the wherein compound have the size distribution for being expressed as D50 equal to or less than 1 μm;And such combination Purposes of the object in the preparation of polyurethane foam or the polyurethane foam of modification.
The thermal conductivity of the foam of the present invention can be with operating specification " EN 12667:Thermal performance of building materials and products[The Re Xingneng &#93 of construction material and product;" by means of protective heat plate and hot-fluid It counts to measure.
Following instance is intended to illustrate the present invention in a non limiting manner.
Example:
Example 1:The preparation of polyol blends
30min is continued by 13.5wt%NaHCO at 10000rpm by using PENDRAULIK overhead types dissolvers3 (from Su Wei groups) be dispersed in comprising 16.7gB251,50.0g2412 and 33.3gIn the polyol blends of RN 490.Then, so as to get mixture in ball millSL- 25 (manufacturers of C:VMA-Getzmann GmbH) in use ZrO2 pearl (diameters:It 0.5mm) is subjected to grinding steps at 200 rpm Continue 12.5h.Then, so that the mixture is subjected to sonication step and continue 1 hour.
NaHCO in the suspension of gained is measured as described above3Size distribution and show D50 be 0.85 μm.
Table 1 shows the D50 values with different milling times and optional sonication (1h) acquisition.
Table 1
Example 1b:The preparation of the sides A- with abrasive solvents
Continue 1 hour at 3,000 rpm by NaHCO by using PENDRAULIK overhead types dissolvers3(come from Su Weiji Group) be dispersed inContain 40wt%NaHCO in HT55 with provide 10kg3Slurry.By with ZrO2 Pearl ball milling (NetzschRS) suspension is milled 4h.This step obtain the size distribution for being expressed as D50 be from 50nm to 150nm depends on total milling time.Then slurry evaporated on the rotary evaporator and by using PENDRAULIK overhead types dissolvers continues 30min at 10000rpm and the solid of acquisition is redispersed in comprising 16.7gB251,50.0g2412 and 33.3gIn the polyol blends of RN 490.Later will The other components of the sides A- are added to this polyalcohol/NaHCO3In mixture.
Example 2:The manufacture of polyurethane foam (PU plates)
Using from example 1 and 1b polyol suspension, using the component as shown in the following table prepare polyurethane Foam:
The polynary of the 100g prepared in example 1 is stirred in the dixie cup of 500mL using PENDRAULIK overhead types dissolvers Alcohol mixture and fire retardant.Then, it adds MDI and continues to stir 10s at 2500rpm, mixture seems after this Uniformly and start bubble occur.After stopping blender, which is poured into 1L dixie cups to allow Foam Expansion and cure Continue at least one day.The foam of acquisition can be used to prepare discontinuous plate.
Example 3:Injection foaming
By conventional means polyurethane foam (spray foam) is prepared using the component as shown in the following table.
* it is expressed as the weight polyol of parts by weight/100
Example 4:The manufacture of polyisocyanurate foam (PIR plates)
Using from example 1 and 1b polyol suspension, poly- isocyanide is prepared using the component as shown in the following table Urea acid esters foam:
These polyisocyanurate foams are prepared using 200 MDI indexes.
The more of the 80g prepared in example 1 or 1b are stirred in the dixie cup of 500mL using PENDRAULIK overhead types dissolvers First alcohol mixture, catalyst, fire retardant and surfactant.Then, it adds MDI and continues to stir 10s at 2500rpm, Mixture seems uniform and starts bubble occur after this.After stopping blender, which is poured into 1L dixie cups To allow Foam Expansion and cure to continue at least one day.The foam of acquisition can be used to prepare discontinuous plate.

Claims (15)

1. a kind of method for the polyurethane foam being used to prepare polyurethane foam or modification, this method pass through including wherein compound The decomposition of thermal induction and/or chemical induction is come the step of discharging chemistry and/or physical blowing agent, wherein the compound has and is equal to Or the size distribution for being expressed as D50 less than 1 μm, preferably equal to or lower than 500nm, more preferably equal to or less than 250nm.
2. according to the method described in claim 1, wherein, which preferably passes through there is no acidic activator The decomposition of thermal induction discharges the chemistry and/or physical blowing agent.
3. according to the method described in claim 1, wherein, the compound is more excellent preferably there are acidic activator The chemistry and/or physical blowing agent are discharged by the decomposition of chemical induction in the case of being selected in there are citric acid and/or formic acid.
4. according to the method in any one of claims 1 to 3, wherein the compound is inorganic carbonate, preferably the change It is NaHCO to close object3
5. according to the method in any one of claims 1 to 3, wherein the compound is the hydrate of inorganic salts, preferably The compound is the hydrate of sodium sulphate, and the more preferably compound is Na2SO4·10H2O。
6. the method according to any one of claims 1 to 5, wherein, which has equal to or more than 10nm, preferably Equal to or more than the size distribution for being expressed as D50 of 50nm, more preferably equal to or greater than 100nm.
7. method according to any one of claim 1 to 6, this approach includes the following steps:
A) suspension for including the compound and at least one polyalcohol is prepared, and
B) suspension formed in step b) is made to be contacted with the composition comprising at least one isocyanates to prepare poly- ammonia Chemistry and/or physical blowing agent are discharged under heat and/or chemical activation for ester foam, wherein compound and wherein the compound has There is the size distribution for being expressed as D50 equal to or less than 1 μm.
8. the method for claim 7, this approach includes the following steps:
a1) suspension for including the compound and at least one polyalcohol is prepared,
a2) make in step a1) in formed the suspension reduce the size distribution of the compound through being subject to processing, and
B) make in step a2) in formed the suspension contacted with the composition comprising at least one isocyanates to prepare poly- ammonia Chemistry and/or physical blowing agent are discharged under heat and/or chemical activation for ester foam, wherein compound and wherein the compound has There is the size distribution for being expressed as D50 equal to or less than 1 μm.
9. method according to any one of claim 1 to 6, wherein the processing of the reduction size distribution includes that grinding walks Suddenly, it is preferable to use the grinding steps of ball mill.
10. method according to any one of claim 1 to 6, this approach includes the following steps:M1) prepare includes the change Close object, particularly NaHCO3With the suspension of abrasive solvents,
M2) make in step m1) in formed the suspension reduce the size distribution of the compound through being subject to processing, especially grind Step,
M3) by the evaporative removal abrasive solvents,
M4) prepare in step m3) in formed the compound, particularly NaHCO3In the sides A- or in one kind of the sides A- or several Suspension in component, and
M5) make in step m4) in formed the suspension contacted with the composition comprising at least one isocyanates it is poly- to prepare Urethane foam, wherein compound discharge chemistry and/or physical blowing agent and the wherein compound under heat and/or chemical activation With the size distribution for being expressed as D50 equal to or less than 1 μm.
11. according to the method described in claim 10, wherein, the processing of the reduction size distribution includes grinding steps, preferably ball Grind step.
12. a kind of polyurethane foam or the polyurethane foam of modification, pass through the side as described in any one of claim 1 to 11 Method can get.
13. foam as claimed in claim 12, which includes abscess, these abscesses have to be measured according to ASTM D 3576 Slave 10nm to 1 μm, the average cell size preferably from 50nm to 500nm, more preferably from 100nm to 250nm.
14. a kind of composition, the composition includes at least one polyalcohol and can pass through the drop of thermal induction and/or chemical induction Solution discharges the compound of chemistry and/or physical blowing agent, and wherein the compound has is expressed as D50 equal to or less than 1 μm Size distribution.
15. purposes of the composition according to claim 14 in preparing the polyurethane foam of polyurethane foam or modification.
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